7.E.C.5

A

100

Which statement describes the niche of an organism in an ecosystem? A) A pelican is able to fly long distances without stopping. B) A snake feeds on small rodents in a forest. C) A moth is nocturnal and is attracted to light. D) A frog spends part of its life in water and part on land.

 A snake feeds on small rodents in a forest.

200

Which sequence categorizes the five levels of ecological organization from least inclusive to most inclusive? A) biosphere, ecosystem, population, community, organism B) ecosystem, biosphere, community, population, organism C) organism, community, population, ecosystem, biosphere D) organism, population, community, ecosystem, biosphere

organism, population, community, ecosystem, biosphere

300

A study conducted by a group of scientists found that there had been a reduction in vegetation in an ecosystem over the past 8 months. They investigated and found that the mineral nutrients present in soil were not available to local organisms and the decomposition of organic materials was too slow. Which event most likely caused this? A) acid rain B) earthquake C) volcanic eruption D) wildfire

acid rain

400

Which soil sample would have the most gritty texture? A) loam B) sandy clay loam C) silt loam D) clay

sandy clay loam

500

Which organism is a link between an aquatic food web and a terrestrial food web? A) clam B) dolphin C) penguin D) shark

penguin

B

100

Which organism is the link between the aquatic and terrestrial food webs? A) alligator B) egret C) killifish D) shrimp

egret

200

#43

point D

300

#44

Both the alligator and the freshwater crocodile would compete for food resources.

400

A connection between terrestrial and aquatic food webs is best exemplified by which pair of animals?

A) dolphins and fish B) lions and gazelles 

C) pelicans and fish D) spiders and flies

pelicans and fish

500

#46

wild turkey

C

100

#47

B) a drought that causes most grasses to die out

200

#1

R

300

#2

Remove the grasses from areas of rapid growth in the forest.

400

#3

The seal and pelican populations would decrease.

500

#5

Owls would be affected more because they are predators for fewer animals than the hawks.

D

100

Which statement describes an autotroph?

A  an organism that breaks down and obtains energy stored in dead organic matter 
B an organism that captures energy from sunlight or chemicals and uses it to produce food 
C  an organism that is completely reliant on consuming other organisms to obtain energy 
D  an organism that meets its energy needs by feeding on organic matter or other organisms

an organism that captures energy from sunlight or chemicals and uses it to produce food

200

#7

an organism that meets its energy requirements by feeding on organic matter or other organisms

300

#8

 +/+

400

#9

1 and 3

500

#10

limited availability of nesting space